NUMBER, noun. (Followed by a numeral; used attributively) Indicating the position of something in a list or sequence. Abbreviations: No or No., no or no. (in each case, sometimes written with a superscript "o", like Nº or №). The symbol "#" is also used in this manner.

NUMBER, noun. Quantity.

NUMBER, noun. A sequence of digits and letters used to register people, automobiles, and various other items.

NUMBER, noun. (countable) (informal) A telephone number.

NUMBER, noun. (grammar) Of a word or phrase, the state of being singular, dual or plural, shown by inflection.

NUMBER, noun. (countable) A performance; especially, a single song or song and dance routine within a larger show.

NUMBER, noun. (countable) (informal) A person

NUMBER, noun. (countable) (informal) An item of clothing, particularly a stylish one

NUMBER, noun. (slang) (chiefly US) A marijuana cigarette, or joint; also, a quantity of marijuana bought form a dealer.

NUMBER, noun. (dated) An issue of a periodical publication.

NUMBER, verb. (transitive) To label (items) with numbers; to assign numbers to (items).

NUMBER, verb. (intransitive) To total or count; to amount to.

NUMBER, adjective. Comparative form of numb: more numb

NUMBER 10, proper noun. (idiom) Alternative form of 10 Downing Street

NUMBER 2, noun. Alternative spelling of number two

NUMBER 2, noun. Short form of number 2 pencil

NUMBER 2 PENCIL, noun. (US) A pencil which produces a specific shade of dark gray. One can usually identify a number 2 pencil by looking for the number "2" conspicuously emblazoned on the pencil. Often required for test-taking and the completion of official forms.

NUMBER 2 PENCIL, noun. (US) A standard, ordinary pencil; one which is not colored or mechanical or in any other way unusual.

NUMBER 2 PENCILS, noun. Plural of number 2 pencil

NUMBER CLOSE, verb. To end a pickup of a woman by getting her telephone number.

NUMBER CLOSE, noun. An end of a pickup of a woman by getting her telephone number.

NUMBER CRUNCHER, noun. An accountant or other person who deals with the calculation of numbers as a profession.

NUMBER CRUNCHERS, noun. Plural of number cruncher

NUMBER CRUNCHING, noun. Alternative spelling of number-crunching

NUMBER EIGHT, noun. (rugby) A player in the scrum, who controls the movement of the scrum, and can pick up the ball exiting the scrum.

NUMBER EIGHT, noun. (cricket) The batsman who bats eighth.

NUMBER EIGHTS, noun. Plural of number eight

NUMBER ELEVEN, noun. (cricket) The batsman who bats last; usually the worst batsman in the side.

NUMBER FIELD, noun. (mathematics) (algebraic number theory) A field which includes the rational numbers and has finite dimension as a vector space over the rational numbers.

NUMBER FIELDS, noun. Plural of number field

NUMBER FIVE, noun. (cricket) The batsman who bats fifth.

NUMBER FIVES, noun. Plural of number five

NUMBER FOUR, noun. (cricket) The batsman who bats fourth.

NUMBER FOURS, noun. Plural of number four

NUMBER GAME, noun. Any of many games based upon numbers

NUMBER GAMES, noun. (idiomatic) A numbers game: the use of inappropriate statistics (numbers) to reflect a desired result (usually misleading).

NUMBER GAMES, noun. Plural of number game: lotteries, numbers games.

NUMBER LINE, noun. (mathematics) A line that graphically represents the real numbers as a series of points whose distance from an origin is proportional to their value

NUMBER LINES, noun. Plural of number line

NUMBER NEEDED TO HARM, noun. The number of people, statistically, who must be exposed to something in order for one of them to experience an adverse effect.

NUMBER NINE, noun. (cricket) The batsman who bats ninth.

NUMBER NINE, noun. (soccer) The centre forward

NUMBER NINE, noun. (dated) (British Army military slang) A laxative pill.

NUMBER NINES, noun. Plural of number nine

NUMBER OF THE BEAST, proper noun. (Christianity) The number 666, in context of being related to the Beast.

NUMBER ONE, adjective. (idiomatic) First; foremost; best, often used after its headword.

NUMBER ONE, noun. The most important person, the one who is in charge

NUMBER ONE, noun. Someone who is top of a ranking, who is ranked first.

NUMBER ONE, noun. Oneself, being considered foremost, as by an egoist (cf. look out for number one)

NUMBER ONE, noun. (childish) (euphemistic) Urine; urination.

NUMBER ONE, noun. (music) the single that has sold the most in a given period.

NUMBER ONE, noun. (soccer) The main goalkeeper of a team, so-called because they wear the number 1 on the back of their kit.

NUMBER ONE, noun. (cricket) The batsman who opens the batting.

NUMBER ONE, noun. Used other than as an idiom: see number,‎ one.

NUMBER ONE WITH A BULLET, adjective. (idiomatic) Superlative; impossible to beat.

NUMBER ONES, noun. Plural of number one

NUMBER PLATE, noun. (British) Either of a pair of rectangular metal plates, containing a mixture of letters and numbers fixed to the front and rear of a motor car showing that its identity has been registered with the DVLA

NUMBER PLATES, noun. Plural of number plate

NUMBER SEVEN, noun. (cricket) The batsman who bats seventh.

NUMBER SEVENS, noun. Plural of number seven

NUMBER SIGN, noun. The character # used to represent the word number; the hash sign; also called the pound sign in the US

NUMBER SIGNS, noun. Plural of number sign

NUMBER SIX, noun. (cricket) The batsman who bats sixth.

NUMBER SIXES, noun. Plural of number six

NUMBER SYSTEM, noun. (arithmetic) A set of numerals for representing numbers.

NUMBER TWO, noun. (cricket) The batsman who opens alongside the number one, but does not face the first delivery.

NUMBER TWOS, noun. Plural of number two

Dictionary definition

NUMBER, noun. The property possessed by a sum or total or indefinite quantity of units or individuals; "he had a number of chores to do"; "the number of parameters is small"; "the figure was about a thousand".

NUMBER, noun. A concept of quantity involving zero and units; "every number has a unique position in the sequence".

NUMBER, noun. A short theatrical performance that is part of a longer program; "he did his act three times every evening"; "she had a catchy little routine"; "it was one of the best numbers he ever did".

NUMBER, noun. The number is used in calling a particular telephone; "he has an unlisted number".

NUMBER, noun. A symbol used to represent a number; "he learned to write the numerals before he went to school".

NUMBER, noun. One of a series published periodically; "she found an old issue of the magazine in her dentist's waiting room".

NUMBER, noun. A select company of people; "I hope to become one of their number before I die".

NUMBER, noun. A numeral or string of numerals that is used for identification; "she refused to give them her Social Security number".

NUMBER, noun. A clothing measurement; "a number 13 shoe".

NUMBER, noun. The grammatical category for the forms of nouns and pronouns and verbs that are used depending on the number of entities involved (singular or dual or plural); "in English the subject and the verb must agree in number".